Stratford boasts Fright Haven, one of the largest haunted houses in the state, at 411 Barnum Ave., Stratford, across from Home Depot. Fright Haven occupies 20,000 square feet and showcases these new attractions: Insaneatarium, Redneck Rampage and Spaz’s Nightmare in 3D (all included in admission). There are new sets, props, decor, lighting, special effects, illusions and scare actors. Fright Haven is open Thursday to Sunday nights through Halloween, rain or shine. It is handicapped accessible. Tickets are $20 in advance, $25 at the door, with V.I.P. skip-the-line options.

Related Stories

The Haunted Graveyard at Lake Compounce in Bristol is also big-time, open Friday to Sunday at 5 p.m. for rides and open at dusk to take you on “a terrifying one-mile journey through darkly glittering catacombs to an eerie graveyard, to a vampire’s haunt, to a witch’s lair, then onto a misty lake and an ancient temple.” Admission is $28-$35.

Hamden has Creeperum Haunted House, an an indoor haunt open rain or shine at 41R Marne St., in the rear of the building behind Monkey Joe’s Party Center. The warehouse attraction is open at 7 p.m. every Thursday to Sunday through Oct. 29, as well as Oct. 30 & Halloween night. Closes at different times depending on the night and length of the line. $20-$40.

The Lockwood-Mathews Mansion Museum will kick off its Halloween tours on Friday, Oct. 19, at 5:20 p.m. with “Ghosts from the Civil War,” at 295 West Ave., Norwalk. Children under 16 must be accompanied by a parent or guardian. Tour dates and times are: Oct., 19, 20, 21, 26, 27 and 28 at 5:20, 5:40, 6, 7, 7:20, 7:40, 8, 8:20 and 8:40 p.m.

Also in Norwalk, Stepping Stones BOO-seum for Children, 303 West Avenue, exit 14N or 15S off I-95, has a week’s worth of kid stuff from Tuesday, Oct. 23, to Halloween night, including costume catwalks, creature features, face painting, hat sorting, magic tricks, make-believe monsters, mask making, pumpkin decorating and BooZoo’s Great Pumpkin parades. Admission is $15 for adults and children and $10 for seniors.

In Guilford, the lights will be off in Connecticut’s oldest house, the Henry Whitfield State Museum, so bring a flashlight to explore — even the basement, which may have surprises for visitors brave enough to venture there, say organizers. Admission includes crafting gravestones and gargoyles out of clay, displays on the Guilford Green graveyards and the Whitfield connection to the Salem witch trials. Oh, and candy. $6. Free for children ages 12 and younger.

Nightmare on Wolcott Street is Waterbury’s contribution to the gory-glory story, boasting 55 rooms of terror at 1058 Wolcott St. Open Friday-Sunday from 6-11 p.m. through Oct. 28. $15.